<template>
 <view>
   <view class="cart-container" v-if="cart.length!==0">
      <!-- 收货地址组件 -->
      <my-address></my-address>
      <!-- 商品列表的标题区域 -->
      <view class="cart-title">
        <!-- 左侧的图标 -->
        <uni-icons type="shop" size="18"></uni-icons>
        <!-- 右侧的文本 -->
        <text class="cart-title-text">购物车</text>
      </view>
     <!-- 循环渲染购物车中的商品信息 -->
     <uni-swipe-action>
        <block v-for="(goods,i) in cart" :key="goods.goods_id">
       <uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(goods)">
           <my-goods :goods="goods" :showRadio="true" @radio-change="radioChangeHangler" :show-num="true" @num-change="numberChangeHandler"></my-goods>
       </uni-swipe-action-item>
        </block>
     </uni-swipe-action>
     
     <!-- 使用自定义的 -->
     <my-settle></my-settle>
    </view>
    <!-- 空白购物车的区域 -->
   <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
 </view>
</template>

<script>
import badgeMix from '@/mixins/tabbar-badge.js'
import {mapState,mapMutations} from 'vuex'
  export default {
    mixins:[badgeMix],
    computed:{
      ...mapState('m_cart',['cart'])
    },
    data() {
      return {
        options:[{
          text:'删除',
          style:{
            backgroundColor:'#c00000'
          }
        }]
      }
    },
    methods: {
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById'])
      ,
      setBadge(){
        uni.setTabBarBadge({
          index:2,
          text: this.total+ ''
        })
      },
      radioChangeHangler(e){
       this.updateGoodsState(e)
      },
      numberChangeHandler(e){
       this.updateGoodsCount(e)
      },
      swipeItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      }
    }
  }
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
.cart-title{
  height: 40px;
  display: flex;
  align-items: center;
  padding-left: 5px;
  border-bottom: 1px solid #EFEFEF;
  .cart-title-text{
    font-size: 14px;
    margin-left: 10px;
  }
}

.empty-cart{
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  
  .empty-img{
    width: 90px;
    height: 90px;
  }
  .tip-text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
